For the Inventor, By the Inventor

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Kyungki-do, South Korea

Hong Jin Crown Corporation, Ltd.

USPTO Granted Patents = 2

Trademarks = 2

Forward Citations = 11

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4 inventors (with patents filed for the assignee):

Myung-Ho Jung (2 out of 2 patents)

Wan-Ki Hong (2 out of 4 patents)

Seung-Han Park (2 out of 2 patents)

4. Dae-Ki Park (2 out of 2 patents)

2 patents: Sort by Forward Citations

1. 6676884 - Dual-structure helmet and method of manufacturing the same (2004-01-13),

2. 6468644 - Dual-structure helmet and method of manufacturing the same (2002-10-22),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#15 in Kyungki-do

#3,600 in South Korea

Kyungki-do, South Korea

Hong Jin Crown Corporation, Ltd.

Forward Citations = 11

4 inventors:

Myung-Ho Jung (2 out of 2 patents)

Wan-Ki Hong (2 out of 4 patents)

Seung-Han Park (2 out of 2 patents)

4. Dae-Ki Park (2 out of 2 patents)

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